Three cases of eccrine porocarcinoma.

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We report three cases of eccrine porocarcinoma seen at our hospital.Case 1: A 77-year-old female had a 40×35 mm clearly-demarcated erythema on the lateral aspect of her left thigh, with a 15×17 mm region of erosion in its center. The lesion was locally excised deeply to the fascia, and circumferentially to a distance of 3cm beyond the tumor margin. Histopathologically, the lesion was diagnosed as an eccrine porocarcinoma. Swelling of the inguinal lymph nodes was observed at 14 months after surgery, and lymph node dissection was performed. Two years have now elapsed since the original surgery, and no recurrence or metastasis has been observed.Case 2: A 74-year-old female had a black-brown swelling of about 12×10 mm with an irregular surface on the medial side of the left lower eyelid. A basal cell epithelioma was suspected, and the lesion was excised circumferentially to a distance of 5 mm from the tumor margin. Histopathologically, the lesion was diagnosed as an eccrine porocarcinoma. At present, two years after surgery, no recurrence or metastasis has been observed.Case 3: A 70-year-old female had a slightly prominent, 13×8 mm, red plaque with a central erosion on the posterior aspect of her left leg. The lesion was excised deeply to the fascia, and circumferentially to a distance of 3 cm from the tumor margin. At present, 27 months after surgery, no recurrence or metastasis has been observed. Histologically, all lesions showed clearly demarcated encapsulated nests, the tumor cells were dysplastic, there was no tendency for keratinization, and ductal structures were observed in the tumor foci.
日本皮膚悪性腫瘍学会の論文

Three cases of eccrine porocarcinoma.

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